Formation of Pseudotachylite and Novaculite

Pseudotachylite

Novaculite

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1 Formation

1.1 Formation

Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Pseudotachylite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

Novaculite forms when microcrystals of silicon dioxide grow within soft sediments that become limestone or chalk. The formation of Novaculite can be either of chemical or biological origin.

1.2 Composition

1.2.2 Mineral Content

Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides

Quartz, Silicon

1.2.3 Compound Content

Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur

Ca, Silicon Dioxide

1.3 Transformation

1.3.1 Metamorphism

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1.4.1 Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Not Applicable

2.1.1 Weathering

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2.1.4 Types of Weathering

Not Applicable

2.1.5 Erosion

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2.1.7 Types of Erosion

Not Applicable

Chemical Erosion, Coastal Erosion, Glacier Erosion

Pseudotachylite and Novaculite Formation

Formation of rocks is a long process and hence, Pseudotachylite and Novaculite formation sounds very interesting. According to the formation, all rocks are divided into :Igneous Rocks, Fossil Rocks and Metamorphic Rocks. Igneous rocks form by crystallization of magma or lava. The magma is made up of various components of pre-existing rocks which have been subjected to melting either at subduction zones or within the Earth's mantle. Igneous rocks are generally seen at mid ocean ridges or in intra-plate hotspots. Sedimentary rocks are formed when sediments accumulate gradually. As the sediments are buried they get compacted as more and more material is deposited on top. Eventually the sediments become so dense that they form a rock. Metamorphic rocks are rocks which once existed as igneous or sedimentary rocks but have been subjected to varying degrees of pressure and heat within the Earth's crust. Get to know all about formation of Pseudotachylite and Novaculite, composition of Pseudotachylite and Novaculite and their transformation.